High CPU temps and System crashes

[Markiii]

I have been facing issues while playing specifics games on my Laptop(Lenovo Legion Y540):

Intel i7--9750HF

Nvidia Geforce 1650

16 gigs of ram.

 

Few months ago i tried to undervolt the CPU because while playing games the temps were reaching 95-97 C, So i used throttle stop to undervolt and it was working perfectly fine, the temps were around 80-88 C.

I don't know why but after 2 months while Playing Apex legends my system would always crash directly or sometimes there would be a blue screen with different errors.

 

I'm not sure what to do. If i try playing games without undervoltig then the temps are always above 95 C.

 

 

 

[unclewebb]

18 minutes ago, Markiii said:

undervolt

Post a FIVR screenshot so I can see your ThrottleStop settings. A crash can be expected if your undervolt settings are too aggressive. 

 

When was the last time you opened up your laptop and cleaned it out? Gaming laptops need regular maintenance. 

[DreamCat04]

14 hours ago, Markiii said:

I have been facing issues while playing specifics games on my Laptop(Lenovo Legion Y540):

Intel i7--9750HF

Nvidia Geforce 1650

16 gigs of ram.

 

Few months ago i tried to undervolt the CPU because while playing games the temps were reaching 95-97 C, So i used throttle stop to undervolt and it was working perfectly fine, the temps were around 80-88 C.

I don't know why but after 2 months while Playing Apex legends my system would always crash directly or sometimes there would be a blue screen with different errors.

 

I'm not sure what to do. If i try playing games without undervoltig then the temps are always above 95 C.

 

 

 

Make sure that the laptop can "breathe" well by lifting it off the surface of the table. My gaming laptop (2020 model Asus ROG Strix G17, i7-10750H, GTX 1660Ti 6GB) also gets to 95°C on the CPU over the course of ~15min of gaming. If I keep it lifted off the table though, my CPU averages 85°C, spiking to 95°C when the CPU gets hit with a spike of full load (like when something loads in and the power consumption spikes too). I've also got an undervolt, but I could do it from my BIOS and for me, -65mV are stable 24/7, anything higher than that can cause a crash. Some laptops use liquid metal on the CPU. That can oxidize over time, which was the case for my laptop. If this happens, the spot that's oxidized will be much warmer. One core was always hitting 95°C while another barely broke 85°C. So I re-spread the LM and got rid of the oxidized spot and I could now cool like 17 more watts. CPUs on gaming lapotps just run hot, it's not avoidable because you don't want a 5kg moster on your lap

[unclewebb]

6 hours ago, DreamCat04 said:

for me, -65mV are stable 24/7

Somewhere around -70 mV is usually 100% stable for many 10750H CPUs.

 

@Markiii has a 9750HF. The 9th Gen mobile CPUs  have more undervolting headroom compared to the 10th Gen mobile CPUs. The 9750H are usually stable with the cache at -120 mV. I would start testing at -100 mV. The ThrottleStop TS Bench 960M is a good test when first setting voltages. If this test reports even 1 Error, stop the test immediately and increase the voltage. 

 

If -100 mV is stable for a few days during normal use, try -110 mV for a few days and then -120 mV. It is best to use your laptop normally for a few days when undervolting. Some people start with an undervolt that is too aggressive, crash, and then give up soon after that.

[Markiii]

9 hours ago, DreamCat04 said:

Make sure that the laptop can "breathe" well by lifting it off the surface of the table. My gaming laptop (2020 model Asus ROG Strix G17, i7-10750H, GTX 1660Ti 6GB) also gets to 95°C on the CPU over the course of ~15min of gaming. If I keep it lifted off the table though, my CPU averages 85°C, spiking to 95°C when the CPU gets hit with a spike of full load (like when something loads in and the power consumption spikes too). I've also got an undervolt, but I could do it from my BIOS and for me, -65mV are stable 24/7, anything higher than that can cause a crash. Some laptops use liquid metal on the CPU. That can oxidize over time, which was the case for my laptop. If this happens, the spot that's oxidized will be much warmer. One core was always hitting 95°C while another barely broke 85°C. So I re-spread the LM and got rid of the oxidized spot and I could now cool like 17 more watts. CPUs on gaming lapotps just run hot, it's not avoidable because you don't want a 5kg moster on your lap

I have my laptop lifted at an height of 5 inches from the table and it still gets hot, i also tried using a cooling pad

[Markiii]

23 hours ago, unclewebb said:

Post a FIVR screenshot so I can see your ThrottleStop settings. A crash can be expected if your undervolt settings are too aggressive. 

 

When was the last time you opened up your laptop and cleaned it out? Gaming laptops need regular maintenance. 

Before it used to run perfectly fine on 110 and it would start crashing if changed it to 120 but not at 100 i'm see a lot of crashes.

[unclewebb]

4 hours ago, Markiii said:

but not at 100

If you are crashing at -100 mV then try using more voltage. Is the TS Bench reporting any errors at -100 mV? It is not unusual for a CPU to require more voltage over time. That is why Intel always starts with too much voltage. 

 

Are you overclocking the Nvidia GPU or changing the GPU voltage? Set the GPU back to default if you are.

[Markiii]

if i change it to -90mv there is no much difference in the cpu temps, although i'll still try it at -90.

 

No i did not overclock the GPU.

 

[Ebony Falcon]

What’s tjmax on that cpu ? 
a lot of laptops run at 100c or 

[Markiii]

5 hours ago, Ebony Falcon said:

What’s tjmax on that cpu ? 
a lot of laptops run at 100c or 

Max that i have seen is around 98c

it is a bad thing if the cpu runs so hot right?

 

[unclewebb]

The Intel spec for the maximum safe temperature is 100°C but not all CPUs can run reliably when they are over 95°C. You will probably not hurt the CPU but your computer might crash more often at high temperatures like this. 

 

On 5/14/2023 at 2:15 PM, unclewebb said:

When was the last time you opened up your laptop and cleaned it out? Gaming laptops need regular maintenance. 

It seems like your main issue is cooling. To improve stability, clean out your laptop or else you will be forced to slow your CPU down further so it does not run so hot. 

[Ebony Falcon]

1 hour ago, Markiii said:

Max that i have seen is around 98c

it is a bad thing if the cpu runs so hot right?

 

There’s a safe limit in place at 100c to stop it from damaging its self 

all that will happen if u hit 100f is the cpu will slow down untill it’s cooled bellow 100c so u will loose performance but it won’t damage its self 

[Markiii]

18 hours ago, unclewebb said:

The Intel spec for the maximum safe temperature is 100°C but not all CPUs can run reliably when they are over 95°C. You will probably not hurt the CPU but your computer might crash more often at high temperatures like this. 

 

It seems like your main issue is cooling. To improve stability, clean out your laptop or else you will be forced to slow your CPU down further so it does not run so hot. 

Can you please explain , how can i slow down my CPU ?

[unclewebb]

3 hours ago, Markiii said:

how can i slow down my CPU ?

You have already slowed the CPU down by reducing the turbo ratio limits.

Lower the turbo ratios some more if you want a slower and cooler running CPU.

 

[Markiii]

32 minutes ago, unclewebb said:

You have already slowed the CPU down by reducing the turbo ratio limits.

Lower the turbo ratios some more if you want a slower and cooler running CPU.

 

oh okayy thank you!!!!!\

 

[Markiii]

Hey!!

 

Today i was cleaning my laptop fans and i touched something on the motherboard with a tool which had a sharp end and i saw some sparks.

 

Is this something dangerous for  my laptop?

[unclewebb]

4 hours ago, Markiii said:

Is this something dangerous for my laptop

It can be fatal to your laptop. You should disconnect the battery when working inside a laptop.

 

Not that I have ever used one but some techs like to wear ground straps too.

[Markiii]

ohhh , i should be careful from next  time.
 

Also when i was plugging in the cables today i felt slight jolt on my fingers